diff --git a/Known-issues.md b/Known-issues.md
index 7c11ab1..8f6697d 100644
--- a/Known-issues.md
+++ b/Known-issues.md
@@ -253,6 +253,7 @@ If running TDJ in windowed mode with subscreen in a separate window (`-w` on, `-
 * Your GPU must support OpenGL; some old integrated GPUs have trouble with this. If your GPU doesn't support it, the game will fail to launch.
   * Older Intel HD Graphics (integrated) **will** fail to launch. You can tell if the game disappears after `CreateWindowExA hook hit` in the log.
 * Due to the game using OpenGL, many of the graphics options simply do not work, including but not limited to: screenshots, window options, image scaling, streaming to Companion, etc.
+* Older versions of Jubeat (Copious and below?) tend to launch at the wrong FPS (41FPS instead of 30FPS). Supposedly, running it on Windows 7 fixes this problem.
 * The game **always** launches in a window without any decorations.
 * The recommended set up is the following. This way, you can have an experience close to full screen.
     1. Set the screen as main monitor, if you have multiple